A computer implemented method of operating an air cleaning cluster (20, 20′) comprising a plurality of air cleaning devices (10, 10.1-10.n) interconnected to each other by a volume of air (100), each air cleaning device (10, 10.1-10.n) being configured to remove contaminants from the volume of air (100), the method comprising: receiving, by control device(s) (30, 30′, 30″ 30.1-30.n) from air quality data sources, data indicative of air quality within the volume of air (100); receiving, by the control device(s) (30, 30′, 30″ 30.1-30.n), data indicative of operational state(s) of the air cleaning devices (10, 10.1-10.n); and the control device(s) (30, 30′, 30″ 30.1-30.n) controlling the air cleaning device(s) (10, 10.1-10.n) of the air cleaning cluster (20, 20′) such as to influence the indoor air quality within the volume of air (100), using the data indicative of the indoor air quality and the data indicative of an operational state of the plurality of air cleaning devices (10, 10.1-10.n).